﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;



namespace Hello_World
{
    class Hello
    {
        static void Main(string[] args)
        {
            Console.BackgroundColor = ConsoleColor.Blue;
            Console.ForegroundColor = ConsoleColor.Green;
            Console.WriteLine("Hello World!");
            Console.BackgroundColor = ConsoleColor.Black;
            Console.ForegroundColor = ConsoleColor.White;
            int a = 10;
            if(a>0)
            {
                Console.WriteLine("See You！");
            }
        }
     
    }
    
     
    }


